cats still fighting

I posted before and got alot of help, thanks. I am about to give up on these cats getting along. I think some cats need to be in one cat homes, he is 1 1/2 years and came from one cat home. have had Mocha 3 weeks. they will eat together, but after right back to fighting. have to separate them. Mocha will not leave other cats alone, stalks constantly, jumps at them, then fights.I think jealousy too.I don't think rescue remedy works for jealousy does it?

By fighting, are they drawing blood in each other? Most cats will have their moments of moodiness. Plus they will need to determine who is alpha cat. If you haven't let them do that yet then there will be problems. If they are hissing, growling, stalking and seem to be annoying each other but no blood is being drawn, then let them go. They will eventually learn what the other one does or doesn't like and how far to push them.

Also buy some Feliway Plugins right away. Buy one for all the rooms they are in. You can get them at most large pet stores. Comfort Zone plug ins work too.

yes, got her close to the eye and had little sore on chin now its big also one of them has bloody stool could stress cause this?

also I have a whole house air purification system that takes all odors out don't know if the feliway will work with it

yes, stress can cause blood in the stool. our youngest kitty had that problem for about 2 weeks while dealing with the transition and stress of moving...and then the new changes of having a puppy! but it shouldn't be written off either, so keep an eye on it, and see a vet if it doesn't clear up soon

Mocha keeps biting us hard and drawing blood I have read the cat aggression things. they seem all to be kittens, this cat is almost 2 years old,and I can't pick him up by the scruff he is big 16 Lb siamese. he gives us little warning. we are going to try feliway as a last resort, if it doesn't help we are not going to keep him, I really don't want a cat that I am afraid of.I can't tell if he is playing. his previous owner can't take him back. I'm afraid a new owner would not be as patient as us and hurt him.Don't know if it is the other cats, and maybe he would be fine in a one cat home

Mocha has calmed down enough to let me cut his claws, a major milestone I think, but the fighting continues, one of the others will eat with him, the other won't.I really can't afford the feliway $ 120.00. Don't know if 1 bottle would work,if I tried that. also cannot get it around here have to order it.I tried the vanilla extract, I don't think it did anything. He jumps in their face and then trouble starts. sometimes he backs down and leaves.sometimes not.still think everyone would be happier if he was in a one cat home. I don't think he has any social skills at all, I think he must have been alone most of the time where he came from.poor baby.I feel bad to gain his trust and then give him away, but I may have to